The decomposition of complex systems into manageable parts is an essential principle when dealing with complex technical systems. However, many safety and reliability modelling techniques do not support hierarchical decomposition in the desired way. Fault Tree Analysis (FTA) offers decomposition into modules, a breakdown with regard to the hierarchy of failure influences rather than to the syst...

in recent years, many manufacturing industries for promoting their efficiency have tended to use the automatic manufacturing systems. expanding automatic systems and to increase their complexity are representing the necessity of studying a proper functional quality and using reliable equipment in such systems more than ever. in this direction, the technique of fault tree analysis (fta), along w...

In this paper, the reliability of a collective robotic system is analysed using two different techniques from the field of reliability engineering. The techniques, Failure Mode and Effect Analysis (FMEA) and Fault Tree Analysis (FTA), are used to analyse and compare two variants of a previously developed ‘autonomous morphogenesis’ controller. The reliability of the controller is discussed and a...

Analysis of dependencies between information systems, business processes, and strategic goals is an important part of the discipline of Enterprise Architecture (EA). However, EA models typically provide only visual and qualitative decision support. This paper shows how EA frameworks for dependency analysis can be extended into the realm of quantitative methods by the use of techniques from Faul...

In this paper a new method for mapping fault tree into fuzzy algorithms is introduced. This method is based on the minimal cut sets of a fault tree. This method is characterized by its one-to-one mapping from fault tree (FT) to fuzzy algorithm (FA) and vice versa. So it is consider a canonical method to map FTs into FA. Fault tree analysis (FTA) is a risk analysis technique to assess likelihood...

Effective risk management is a key to ensure that vital assets like our nuclear power plants, medical equipment, and power grids are dependable. Also, risk management is often required by law. Fault Tree Analysis (FTA) is a widely used methodology here, computing important dependability measures like system reliability and availability. This paper presents DFTCalc, a powerful tool for FTA that ...

In this study, the application of Bayes networks and fault tree analysis in reliability estimation have been investigated. Fault tree analysis is one of the most widely used methods for estimating reliability. In recent years, a method called "Bayes Network" has been used, which is a dynamic method, and information about the probable failure of the system components will be updated according to...

Effective risk management is a key to ensure that vital assets like our nuclear power plants, medical equipment, and power grids are dependable. Also, risk management is often required by law. Fault Tree Analysis (FTA) is a widely used methodology here, computing important dependability measures like system reliability and availability. This paper presents DFTCalc, a powerful tool for FTA that ...

Effective risk management is a key to ensure that our nuclear power plants, medical equipment, and power grids are dependable; and it is often required by law. Fault Tree Analysis (FTA) is a widely used methodology here, computing important dependability measures like system reliability. This paper presents DFTCalc, a powerful tool for FTA, providing (1) efficient fault tree modelling via compa...

An approach based on informal, rigorous reasoning is described as a means of discovering “safety verification conditions” (SVCs). The approach can be carried out at various levels of detail. When the approach is carried out at the level of a “black box” view of the system, the result is a set of system safety requirements. The approach has similarities with Fault Tree Analysis (FTA) and Softwar...